Generation of broad spectral components from midwave infrared ultrashort pulse laser propagation through ZnSe and ZnS

Kevin Werner; Michael Tripepi; Aaron Schweinsberg; Michael Hastings; Laura Vanderhoef; Christopher Wolfe; Trenton Ensley; Brian Wilmer; Miroslav Kolesik; Jerome Moloney; Enam Chowdhury; Anthony Valenzuela

doi:10.1117/12.2509928

4 March 2019 Generation of broad spectral components from midwave infrared ultrashort pulse laser propagation through ZnSe and ZnS

Kevin Werner, Michael Tripepi, Aaron Schweinsberg, Michael Hastings, Laura Vanderhoef, Christopher Wolfe, Trenton Ensley, Brian Wilmer, Miroslav Kolesik, Jerome Moloney, Enam Chowdhury, Anthony Valenzuela

Author Affiliations +

Proceedings Volume 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII; 109020W (2019) https://doi.org/10.1117/12.2509928
Event: SPIE LASE, 2019, San Francisco, California, United States

Abstract

We investigate the nonlinear optical properties of ZnSe and ZnS using ultrashort (pulse duration approximately 200 fs) midwave infrared laser pulses between 3 and 4 μm. Multiple harmonic generation in both materials was observed, as well as significant spectral modification of the fundamental pulse. Simulations using a nonlinear polarization model enhanced with ionization compared favorably with experimental data. Random quasi phase matching in the materials is the likely generator of the observed harmonics.

Citation Download Citation

Kevin Werner, Michael Tripepi, Aaron Schweinsberg, Michael Hastings, Laura Vanderhoef, Christopher Wolfe, Trenton Ensley, Brian Wilmer, Miroslav Kolesik, Jerome Moloney, Enam Chowdhury, and Anthony Valenzuela "Generation of broad spectral components from midwave infrared ultrashort pulse laser propagation through ZnSe and ZnS", Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109020W (4 March 2019); https://doi.org/10.1117/12.2509928

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